package chapter03;

    class Student2{
        String name;
        int age;
        void read(){
            System.out.println("大家好，我是"+name+"，年龄"+age);
        }
    }
    class Example02{
        public static void main(String[] args) {
            Student2 stu1 = new Student2();
            Student2 stu2 = null;
            stu2 = stu1;
            stu1.name= "小明";
            stu1.age = 20;
            stu2.age = 50;
            stu1.read();
            stu2.read();
        }
    }
